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The temporal pattern usually described in episodic SUNCT is irregular, with the symptomatic periods alternating with remissions in an erratic fashion. In contrast, it is widely acknowledged that in episodic CH bouts can occur in the same periods every year, particularly during spring and autumn, and in some PH patients seasonal variations have been described.

We present a patient with episodic SUNCT syndrome with bouts that occurred twice annually in spring and autumn.